Question: Instead of using +/- 3 sigma for the Control Limits on a Control Chart you decide to use +/- 2 sigma in order to simplify
Instead of using +/- 3 sigma for the Control Limits on a Control Chart you decide to use +/- 2 sigma in order to simplify your data analysis. The risk of this approach is ___________________ . A. Nothing because Control Limits are fixed by the customer specification B. Nothing because nearly all (95%) of the data falls within +/- 2 sigma C. A Type I Error because you conclude the process is out-of-control when in fact it is in-control D. A Type II Error because you conclude the process is in-control when in fact it is out-of-control
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